About Borides

Zirconium Boride

Borides are chemical compounds formed when boron bonds with a less electronegative element. Borides are all hard, high-melting-point materials with metal-like conductivity. They can be made by direct combination of the elements at high temperatures or, more usually, by high-temperature reduction of a mixture of the metal oxide and boron oxide using carbon or aluminium. Chemically, they are stable to non-oxidizing acids but are attacked by strong oxidizing agents and by strong alkalis. Borides can be classified loosely as boron-rich or metal-rich. The generally accepted definition is that if the ratio of boron atoms to metal atoms is 4:1 or more the compound is boron-rich, if it is less, then it is metal-rich.

Boron-rich boride properties vary from one compound to the next, and include examples of compounds that are semiconductors, superconductors, diamagnetic, paramagnetic, ferromagnetic or anti-ferromagnetic. They are mostly stable and refractory. One such compound, lanthanum boride (LaB6), is an inert refractory compound, used in hot cathodes because of its low work function for emission of electrodes.

Borides formed with transition metals tend to form metal-rich borides. Metal-rich borides are typically inert and have high melting temperatures. Investigations into these borides have revealed a wealth of interesting properties such as superconductivity at 39 K in magnesium diboride (MgB2) and the ultra-incompressibility of OsB2 and ReB2.

Recent Research & Development for Borides

Ultrathin Amorphous Iron-nickel Boride Nanosheets for Highly Efficient Electrocatalytic Oxygen Production., Wang, Xin, Nsanzimana Jean Marie Vian, Reddu Vikas, Peng Yuecheng, Huang Zhenfeng, and Wang Cheng , Chemistry, 2018 May 23, (2018)

Synthesis of Magnesium Nickel Boride Aggregates via Borohydride Autogenous Pressure., Shahbazi, Mahboobeh, Cathey Henrietta E., and Mackinnon Ian D. R. , Materials (Basel), 2018 Mar 23, Volume 11, Issue 4, (2018)

Thermal activation of methane by vanadium boride cluster cations VB (n = 3-6)., Chen, Qiang, Zhao Yan-Xia, Jiang Li-Xue, Li Hai-Fang, Chen Jiao-Jiao, Zhang Ting, Liu Qing-Yu, and He Sheng-Gui , Phys Chem Chem Phys, 2018 Feb 14, Volume 20, Issue 7, p.4641-4645, (2018)

Screened moments and extrinsic in-gap states in samarium hexaboride., Fuhrman, W T., Chamorro J R., Alekseev P A., Mignot J-M, Keller T, Rodriguez-Rivera J A., Qiu Y, Nikolić P, McQueen T M., and Broholm C L. , Nat Commun, 2018 Apr 18, Volume 9, Issue 1, p.1539, (2018)

Highly Tunable Hollow Gold Nanospheres: Gaining Size Control and Uniform Galvanic Exchange of Sacrificial Cobalt Boride Scaffolds., Lindley, Sarah A., Cooper Jason K., Rojas-Andrade Mauricio D., Fung Victoria, Leahy Conor J., Chen Shaowei, and Zhang Jin Z. , ACS Appl Mater Interfaces, 2018 Apr 18, Volume 10, Issue 15, p.12992-13001, (2018)

Samarium hexaboride is a trivial surface conductor., Hlawenka, P, Siemensmeyer K, Weschke E, Varykhalov A, Sánchez-Barriga J, Shitsevalova N Y., Dukhnenko A V., Filipov V B., Gabáni S, Flachbart K, et al. , Nat Commun, 2018 02 06, Volume 9, Issue 1, p.517, (2018)

Magnesium diboride (MgB2) as a saturable absorber for a ytterbium-doped Q-switched fiber laser., Morshed, Monir, Hattori Haroldo T., Haque Ahasanul, and Olbricht Benjamin C. , Appl Opt, 2017 Sep 20, Volume 56, Issue 27, p.7611-7617, (2017)

Catalytic Reductions and Tandem Reactions of Nitro Compounds Using in Situ Prepared Nickel Boride Catalyst in Nanocellulose Solution., Prathap, Kaniraj Jeya, Wu Qiong, Olsson Richard T., and Dinér Peter , Org Lett, 2017 Sep 15, Volume 19, Issue 18, p.4746-4749, (2017)

Formation and Characterization of Hydrogen Boride Sheets Derived from MgB by Cation Exchange., Nishino, Hiroaki, Fujita Takeshi, Cuong Nguyen Thanh, Tominaka Satoshi, Miyauchi Masahiro, Iimura Soshi, Hirata Akihiko, Umezawa Naoto, Okada Susumu, Nishibori Eiji, et al. , J Am Chem Soc, 2017 Oct 04, Volume 139, Issue 39, p.13761-13769, (2017)

Enhancement of photoelectrochemical oxidation by an amorphous nickel boride catalyst on porous BiVO4., Dang, Ke, Chang Xiaoxia, Wang Tuo, and Gong Jinlong , Nanoscale, 2017 Nov 02, Volume 9, Issue 42, p.16133-16137, (2017)

Boron-Dependency of Molybdenum Boride Electrocatalysts for the Hydrogen Evolution Reaction., Park, Hyounmyung, Encinas Andrew, Scheifers Jan P., Zhang Yuemei, and Fokwa Boniface P. T. , Angew Chem Int Ed Engl, 2017 May 08, Volume 56, Issue 20, p.5575-5578, (2017)

General Fabrication of Boride, Carbide, and Nitride Nanocrystals via a Metal-Hydrolysis-Assisted Process., Zhou, Ling, Yang Lishan, Shao Li, Chen Bo, Meng Fanhui, Qian Yitai, and Xu Liqiang , Inorg Chem, 2017 Mar 06, Volume 56, Issue 5, p.2440-2447, (2017)

Manganese mono-boride, an inexpensive room temperature ferromagnetic hard material., Ma, Shuailing, Bao Kuo, Tao Qiang, Zhu Pinwen, Ma Teng, Liu Bo, Liu Yazhou, and Cui Tian , Sci Rep, 2017 Mar 06, Volume 7, p.43759, (2017)

The structure and hardness of the highest boride of tungsten, a borophene-based compound., Szwacki, Nevill Gonzalez , Sci Rep, 2017 Jun 22, Volume 7, Issue 1, p.4082, (2017)

Computational Analysis of Transition Metal-Terminal Boride Complexes., Ceylan, Yavuz S., and Cundari Thomas R. , J Phys Chem A, 2017 Dec 07, Volume 121, Issue 48, p.9358-9368, (2017)